Apparatus for casting ingot molds and the like



Dec. 6, 192 7.

Filed May 13, 192

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WILLIAM HAIG RAMAGE, OIF GIRARD, OHIO, A SSIGNOR TO VALLEY MOULD ANDIRON CORPORATION, OF SHARPSVILL'E, PENNSYLVANIA, A- CORPOR-ATION OF NEWYORK.

APPARATUS FOR CASTING INGOT MOLDS Ann THE ILIKE.

Application filed May 13,

This invention relates broadly to metallurgy and more especially toimprovements in apparatus for casting ingots molds andill similarto'that disclosed in the said Perry patent with the exception that thestripping plate is constructed to present a very narrow edge to thematrix wall and is arranged and constructed so that expansion of theinner edge of the plate does not cause warping. Furthermore, the bottomof the matrix comprises a sand surface which leads up to the sand wallon the corebar.

in this new set-up substantially no chilling occurs on the bottom of thecasting because a substantially continuous sand surface forms the matrixwall.

as will prevent a flow of hot molten metal into these slots in case thesame is not filled tion preferably is provided with a tapered inner edgeportion so that a cross section thereof is wedge-shaped. In order toavoid wrinkling orwarpiug when thcinner edge is heated, the strippingplate preferably is provided with narrow slits or slots extendinginwardly preferably at right angles tothe'edge of the plate; therebydividing the thin exposed edgeof the stripping plate into a plurality ofsections, each of which is capable ofa slight linear expansionwithoutwarping the metal in the plate when the set-up is filled withmolten metal. The slots are preferably of such narrowwidth drawings likecharacters are used to represent like parts.

I Figure 1 is a plan view of a pair of strip ping plates inaccordancewith the present invention shown detached from the fiask'to which theplates are adapted to be secured.

Figure 21s a perspective detail view of one portion ofone of-the plates;

Figure 3 illustrates a, vertical section I means well known in the art.

The stripping plate 'in the present inven ping plate for use in casting1926. Serial No. 108.816.

through the set-up of a stool, corebar, stripping plates and flask inaccordance with the present invention. Referring now more particularlyto the drawings, the flask 1 is preferably formed of sections which maybe secured together by This flask carries secured to the bottom flange2, stripping plate sections 4 and 5 which are adapted to beremovably, atthe same time. securely, attached to the fiaskiso that the strippingplates need only be removed in case of change or-repair. .Thesestripping plates are adapted to support a sand wallG in the flask andtoform guides for centering the flask over the mold pattern when the flaskis being rammed. The plates comprise flatportions 7 and beveledStripping inneredges 8. The edges are slotted at 9 plates to expandwhen'heated,

in which is mounted a core .bar 11 having a sand rammed surface and withthe'base 12 of the core bar provided with a circularpan adapted to carrya ring 14 of mold sand which forms the bottom .wall of thematrix of theset-up" The edges 15 of the base 12 extend beneath the stripping plates4 and 5' so that the weight of theflask acting on the edges 15 securelypositions the core bar in the center of the flask. Suitable key bolts 16may be provided to position the flask on the stool and to hold the partsin position during pouring operations.

.'.From the foregoing, it will be observed that substantially the entirematrix wall of theset-up is a sand face and with only a very narrow edgeof the stripping plate being exposed to'the hot molten metal. Thisnarrow edge quickly thickens to a plate of such size as to rapidly carryaway such heat as is'transmitted to the edge and the slots in the edgeprevent warping of the stripping Having thus described my inventionwhatI claim is:

and haviu the inner edge of said plate comprising indi'gid- 1. As anarticle'of manufacture, a strip-.

ualized portions adapted to expand without warping when heated. v

2. As an article of manufacture, a strip ping plate for use in castingand having the 1 a metal stripping plate for use in casting ingot molds,the inner edge of said stripping plate being slottedto permit said edgeto expand and contract under influence of heat and cold without warpinsaid plate, and with the inner edge of said plate being thinner than theouter portion of said plate.

5. As an article of manufacture, a stripping plate for use incasting,said stripping plate bei'ng'adapted to be attached to aflask and supportthe bottom of a sand Wall in said flask, the sand supporting p01- tionof said plate being inclined, and ,provided with slots to permitexpansion of the said supporting edge without warping said plate. It

6. As'an article of'manufaoture, a stripexpan d matrix of the set-up.

ping plate for use in casting, said stripping plate being adapted to beattached to a flask and support the'bottom of a sand wall in said flask,the sand'supporting portion of said plate being inclined in ardly, andprovided with slots leading into the body of said plate remote fromintense heat when,

the device is in use to permit expansion of 7. A set-up for castingingot molds comprising a flask carrying a wall of sand, :1 core bar, astool for supporting said core bar, and a stripping plate on the bottomof said flask and adapted to support the lower portion of a sand wallwithin said flask, the sand supporting portion of said stripping platebeing beveled inwardly, said support- "the sand supportingedge withoutwarping said plate.

ing portion of said strip being constructed to expand without warpingwhen heated.

8. A set-up for easting ingot molds com prising in combinationa flaskprovided with a sand-wall facing, a strippingplate adapted to supportthe bottom portion of said facing and to expose a thin metal edgebeneath said face, a sand covered 'core bar, and a.

sand supporting member adapted to support a layer of sand between saidmetal edge and said-eore bar to comprise the bottom of the ILLIAMHAIGIRAMAGE.

